A compact passive infrared (PIR) motion sensor that detects movement from people and animals at distances of 2 to 5 metres. Much smaller than standard PIR modules, this sensor is ideal for unobtrusive projects and plugs directly into a breadboard or perfboard.

Powered from 3–12 V DC via an onboard regulator, the sensor outputs a 3.3 V digital signal that goes high when motion is detected and stays high for approximately 2 seconds, giving your microcontroller plenty of time to read the state.

Key Features

• Compact Form Factor – Breadboard and perfboard friendly with 3-pin header
• Wide Input Voltage – 3–12 V DC with onboard regulator
• 3.3 V Digital Output – High when motion detected, low when idle
• 13.8 mm Diameter Lens – 100° detection spread, 2–5 m range
• 2-Second Hold Time – Signal stays high after detection for easy reading

Pinout

• Pin 1 (−) – Ground
• Pin 2 (O) – Signal output (3.3 V high/low)
• Pin 3 (+) – Power (3–12 V DC)

Ideal For

• Motion-activated lighting and alarms
• Presence detection in IoT projects
• Breadboard prototyping with Arduino or Raspberry Pi

Package Contents

• 1× Mini PIR motion sensor with 3-pin header and lens

Resources

• PIR Sensor Tutorial (Adafruit Learn)